Fishing-tool



A. F. ROSE.

FISHING TOOL.

APPLICATION FILED APR.15. 1920.

Patented Oct. 4, 1921.

UNITED STATES PATENT OFFICE;

ALBERT E. nose, or ULSA; OKLAHOMA.

rrsnrue-roon.

To all whom it may concern .1

Be it known that I, ALBERT F. Rose, a citizen of the United States, residing at Tulsa, in the county of Tulsa and State of Oklahoma, have-invented certain new and useful: Improvements in Fishing-Tools, of which thefollowing is a specification.

My invention relates to means for pulling rods 01' pipes that have become severed out of well casings and to means for holding them fast to the hoisting apparatus till they have passed beyondthe mouth of the well tubing.

-More particularly my invention relates to a fishing tool which is divided in two sections, one section of which passes the collar or flange of the article sought to be recovered whilethe other section is arrested in its motion till the first 'named' portionhas passed by the flange or collar.

Heretofore, there have been many devices used to recover lost articles such as pipes or rods that had slipped or become broken and lodged in wellv casings. One form of apparatus, Which has met with considerable use, is one in which there are two tapered 1 segmental gripping jaws both adapted to slip over the collar or flange on the article at the same time. It has been found that where the flange on the pipe or rod has become bent or distorted that this form of .tool will not operate to readily pass thereover. Another form comprises a hollow lug carrier which acts as a receptacle for lugs which may be four or more in number. This lug carrier-fits over therod or piping to be extracted, and the lugs because of their loose pivoting on bolts'and by reason of a splits'teel spring encircling them, when they pass the lower edge of the collar are pressed inward sothat their upper-ends are in contact with the pipe below the'collar. With this form of apparatus the dirt which may accumulate upon the rod interferes with theproper contraction of the split steel spring and the lugs do notfirmly engage the collarmAll sockets'made for doingthe work of this fishing tool have springs and screws to; break loose in the well causing the pulling of the full string of tubingto obtain the screws-or springs before the well can be put to pumping, Where slips are used to obtain the same results, they are too thin 'and'invariably break because there is no room between the walls of the tubing '-'for ;heavy slips to passthe collars on the Specification of Letters Patent.

Patented Oct. 4., 1921.

Application filed April 15 1920. Serial No. 374,091.

tubing on all sides of the tubing, at the same time. Likewise these slips have to be recovered by pulling the full string of tub ing before the well can be put to pumping as has been mentioned in regard to devices employing springs or screws. It is applicants intention to devise means for abstracting articles from well tubing that would operate surely and positively and because of its great sturdiness of construction would rarely become inoperative or out of order.

.An object of my invention is to provide a fishing tool for well boring apparatus that will have two spears, one of which is slidable upon the other and so arranged that .whenboth the slips have passed the collar cooperation between the slips which will obviate any tendency of the rod or pipe to be disengaged andrto fall back.

With these .and other objects in View which may be incident to the use of the improvements, my invention consists in the parts and combination thereof hereinafter set forth and claimed, with the understanding that the several necessary elements constituting the same, may bevaried in proportion and arrangement without departing from the spirit and scope of the invention.

In order ,to 'make the invention more clearly understood, I have shown, in the accompanying drawings, means for carrying the same into practical efl'ect, without limiting the improvements in their useful applications to the particular constructions which for the purpose of explanation have been made the subject ofillustration.

Figures 1 to 5 are side elevations partly in cross section showing the different positions of the toolin operation upon a rod. Fig. 1 shows the position of my fishing tool within the well casingbefore 'it has commenced to pass-the collars or flanges of the article sought to be recovered; Fig. 2 shows the position while the long spear is passing the collars of the rod; Fig. 3 shows the position in which the short spear is just commencing to pass the collars of the rod; Fig. 4 shows the position inwhich the short spear has partlycompleted its movement beyond the collars; Fig. 5 shows the short and long spear, bothbelow the flanges or collars and the tool in position for extracting the rod; Fig. 6 is a cross section online '6-6, Fig? 1';

Fig. 7 is a cross section on line 7:'? of 1; Fig. 8 is a cross sect-ion on line 8 8, Fig. 1; Fig. v9 is a cross section on line 9-9, Fig. 1;'Fig. 10 is a cross section on line 1010,

Fig. 1; Fig. 11 is a top plan view of the clamp which is placed around the spears just before the end ofthe extracted rod passes the tube of the wellcasing.

7 My tool comprises along spear 1 fastened firmly to a, shank2 which is angular in cross section, preferably square; shank 2 has a square head 3 of slightly larger cross section than the shank. The head 3 has a lower. collar 4 and an upper collar 5. Above the head is located a continuation of the shank having a screw formed thereon at 6 for the purpose of attaching the tool to any suitable rod. The long spear l'forms a semi-circular shell as plainly indicated in Fig. 9. At the point of juncture of the long spear 1 with the shank 2, there isla horizontally projecting portion 7 through which the shank'2 is fastened. This portion 7 forming the head of the long spear isof substantially circular cross section as indicated in Fig. 8; but hasone half ofthe circular cross section cut away to allow the short spear, to be later described, to slide thereby. The short spear comprises a head 8 having a. hole cutj therethrough to allow it to slide upon the square shank 2 and a semicircular shell body 9 adaptedto-"slide past 'slip12 formed by a thickening of the wall of the end of the spear and also formed with a rounded entering surface. This slip 12'is of 'considerably greater length than is the slip. 11.

A rod 13 upon whichthis tool is shown in operation is indicated in the drawings. When the fishing: tool has been drawn out of the'well' casing to the point at which the slip of the short spear is just emerging from V the edge ofthe' well. casing, itis necessary to clamp the longspearilfand the short spear 91 together. 7 To accomplish this thereis provided afisuitable clamp having arms 14 and I 15 which are pivoted at'16 and-a wing nut 17.

for holding the two arms 14 and 15 in engagement with the spears.

' The operationis plainly indicatedfi'nthe drawings. In 1 thefis'hi-ngtoolis in 9 position just before the long 'sli'p start to pass the collars on the rod? In Fig. 2 the long slip 12 is passing the collars on therod I 13'and is pushing the rod'13 to one side of the well tubing preventing theshort slip '11 from passing by the collars on the rod. The shank 2 has started to slide through the, head 8 of the'short spear 9. By reason of .the square'cross section of the shank 2 the head 8 is prevented from any'rotation or displacement at any time in its angular relation to the long spear 1. In Fig. 3 the parts are shown in the position in which the long slip 12 has passed beyond the collars on the rod and the short slip 11 is just ready to start passing the collars. In this position by reason of the pressure exerted through the 'collar 4 against the head 8 the short slip 11 will be forced past the collars'on the rod 13. It will be noticed that the long slip 12 by wedging the rod to one side offthe 8 well casing prohibits the passage of the short slip 11 until the slip 12 has completely passed the collars on the rod 13, and that after the long slip 12 has passed the collars on the rod 18, the pressure of the head son the short spear 9 will force the rod 13 to the opposite side of the well casing and allow theshort slip.11 to pass.

Fig. 4 indicates the position in which the short slip is passing the collarson'the rod 13. Fig. 5indi cates the position'which theparts assume at the time when the tool 'is in position for the extraction'iof the rod; Short slip 11 and long slip 12 are both located below the .collars on the rod 13 and it is a PIEtCtlCallmpossibility for the rod to slip between the 9 two.

While I have described but one embodiment of my'invention, it is apparent'that "many. modifications may be made thereinby those skilled in the art without departing from the spirit thereof, and I desire therefore that my invention be limited only as set forth in the appended claims or by the showing of the prior art. r

' I claim is 1. In a fishing 1:001 for we'll boring app..-

'ratus, along spear, an object engaging slip onone end thereof, a shank on the other end,

a short spear, an object engaging'slip 'on' one end of the short spear cooperating with the ing with the long spear, and the short spear holding the two spears in close relation to slip on the long spear, and means cooper-ateach other but permitting a lrelative 'sliding V movement.

- 2. In a fishing tool 'for well boring-apparatus, along spear, an object engaging slip on'the long spear, a short spear, anfob ect engagingslipfon the shortspear.{eo jperating with the first-named slip to hold an obj t and means short spear cooperating with the long spear to' hold the two spears =in close fitting relation but permitting asliding' movement between the two spears.

3. In a fishing tool f r well boring apparatus, a long spear, a-shank o'n thejlo'ng f spear, ashort speanfa *head' onithe short spear cooperating with the shank to prevent lateral separation of the spears and to guide them in their relative longitudinal movement.

4. In a fishing tool for well boring apparatus, a long spear, an angular shank on the long spear, a short spear, a head on the short spear having means to engage the shank to prevent lateral movement of the spears but guiding them in their relative longitudinal movement, and cooperating object gripping parts on each spear. 5. In a. fishing tool for well boring apparatus, a long spear, an angular shank thereon, a short spear, a head on the, short spear slidably engaging the shank to prevent lateral movement of the spears but permitting relative longitudinal movement and cooperating object gripping parts on each of the spears.

6. In a fishing tool for well boring apparatus, a long spear, an angular shank thereon, a short spear, a head on the short spear having a hole therein adapted to engage the shank to hold the spears against relative lateral movement but permitting relative longitudinal movement, an object engaging part on one spear cooperating with a similar part on the other spear.

V 7. In a fishing tool for well boring apparatus, a long spear, a short spear, means on the short spear cooperating with means on the long spear whereby the two spears have a longitudinal movement so that whenever the tool is lowered into a well to engage the boring apparatus, the long spear passes one spear and the short spear to pass by the V apparatus and engage under a part of the apparatus where, in cooperation with the long spear, it will lift the apparatus on the application of force to the s ears.

8. In a fishing tool for we 1 boring apparatus, a spear element having a shank, a second spear element having a head engaging the shank of the first element to hold the elements against relative lateral movement but permitting relative longitudinal movement, and an object gripping part on each element cooperating with a similar part on the other for gripping an object.

9. In a fishing tool for well boring apparatus, a spear element semi-circular in cross section, a second spear element semi-circular in cross section, means associated with said elements for guiding them in relative longitudinal movement but preventing relative lateral movement and cooperative object gripping parts on each element. 7

10. In a fishing tool for well boring apparatus, a spear element semi-circularin cross section, a second spear element semi-circular in cross section and adapted to fit the first element in face to face sliding relation and means associated with said elements for holding them in face to face relation but permitting relative longitudinal movement. In testimony whereof I afiix my signature.

ALBERT F. ROSE. 

